Gcx is an astronomical image processing and data reduction tool, with an easy to use graphical user interface. It provides a complete set of data reduction functions for CCD photometry, with frame WCS fitting, automatic star identification, aperture photometry of target and standard stars, single-frame ensemble photometry solution finding, multi-frame color coefficient fitting, extinction coefficient fitting, and all-sky photometry; as well as general-purpose astronomical image processing functions (bias, dark, flat, frame alignment and stacking); It can function as a FITS viewer.

This package provides a lightweight Bitcoin client which protects you from losing your bitcoins in a backup mistake or computer failure. Also, Electrum does not require waiting time because it does not download the Bitcoin blockchain.

zita-bls1 - The Blumlein Shuffler convert binaural stereo signals into a form suitable for reproduction using a convential stereo speaker pair.

Firewall Builder consists of an object-oriented GUI and a set of policy compilers for various firewall platforms. In Firewall Builder, firewall policy is a set of rules, each rule consists of abstract objects which represent real network objects and services (hosts, routers, firewalls, networks, protocols). Firewall Builder helps the user maintain a database of objects and allows policy editing using simple drag-and-drop operations.

The graphical frontend to the apt-key utility (gak) provides an easy to use interface to maintain digital keys for APT. They are required to authenticate Debian archives and prevent malicious packages to creep in.